Home / 8,859.69-13,271.31-6,399.45

Finding the Fourth Proportional to 8,859.69, 13,271.31 and 6,399.45

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Solution

The fourth proportional to 8,859.69, 13,271.31 and 6,399.45 is: 9,586.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.69 : 13,271.31 = 6,399.45 : x
  2. Step 2: Convert to fraction form
    8,859.69/13,271.31 = 6,399.45/x
  3. Step 3: Cross multiply
    8,859.69x = 13,271.31 × 6,399.45
  4. Step 4: Simplify right side
    8,859.69x = 84,929,084.78
  5. Step 5: Solve for x
    x = 84,929,084.78/8,859.69
  6. Step 6: Final answer
    x = 9,586.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.